marbehshalom –
First, they don’t have any flavor – essentially what Health was saying. The point of being dry is that there shouldn’t be any flavor.
Second, even if they do have flavor, once they have become nifsal mei’achilah through the chemical process they cannot become assur again because they are panim chadashos, even if they now produce a good flavor, as R’ Chaim Ozer writes.
Third, even if the above metzius is not applicable, which is not likely; in a case which the non-kosher part is less than rov and the pill does not have a good flavor – not that it has a repulsive flavor (read: it is not better than a piece of kugel that needs salt) – then it’s fine anyway.